Maeda MC815C - Corretive Actions against Twisted Wire Rope

215
5.2 CORRETIVE ACTIONS AGAINST TWISTED WIRE ROPE
Be sure to wear thick leather work gloves when handling wire ropes.
CAUTION
On occasion, reverse the ends of the wire rope. Turn the rope end at the hook block side
for the end at the winch drum side.
This practice helps to extend wire rope service life.
If the wire rope is twisted, eliminate the twist in the following steps:
1. Check the twisting direction and how many times the
wire rope has been twisted.
2. Shift the right control lever into “Down” (push it forward)
to rest the hook block on the ground.
If the hook block cannot be unwound, shift the right
control lever into the “Lower” side (push it to the right) to
lower the boom, or shift the left control lever into the
“Retraction” side (pull it toward you) to retract and lower
the boom.
3. Turn the starter switch to the “OFF” position to stop the
engine.
4. Remove the fixing pin (1) securing the wedge socket,
and remove the wedge socket (2).
5. Hold the end of the wire rope, and forcibly twist it in the
direction opposite to the twisting direction identified in
step 1 (in the opposite direction from the direction in
which the wire rope tends to twist by itself when the
hands are released). Repeat this the predetermined
number of times, which can be obtained by multiplying
the number of twisted times by “n” (the number of wires
hung). When you are finished, put back the wire rope
into place.